Subsequently, the level of correspondence between the participating partners is then compared with that of other pairs of people who are randomly selected or people who share a tepid interaction. Another method featured correlation studies with the aim of assessing the interest properties in the relationship partners, especially using a questionnaire. The explanations are normally manipulated to vary in their level of similarity, ranging from their most to the least similarity to the respondents personal comprehension on the particular dimensions that the researcher wishes to study. In this case, participants are always given descriptions of a person they are expected to meet. The first is through the laboratory experiments. Larkey and Arthur (1061-1076) posit that most of these studies have been done in two major ways. It has drawn studies from various fields, including psychology. The effect of the similarity-attraction effect draws from the adage birds of a feather flock together (Urmson). Contextually, similarity regarding personality showed weaker, but still fundamental impacts on the attraction. As a primary finding, it was observed that the similarity-attraction effect was particularly strongest and consistent for aspects such as values, attractiveness, attitudes and activity preferences. The duo studied different dimensions and aspects of similarity both in the contexts of romantic relationships and normal friendships. In this case, attraction is not only described in the physical sense, but also the liking for a person or wanting to be around the particular person. 197-211) assert that the similarity-attraction effect connotes the common hypothesis that people tend to be attracted to those who are similar to them in various aspects. The importance of similarity in friendships is well examined through the evaluation of the similarity-attraction effect. Friendship is highly likely to result out of such situations (Urmson). Correspondingly, we tend to like those who share our values and opinions. It is also projected that human beings tend to like those who oppose and disagree with their perspectives and opinions on important matters. The propinquity effect predicts that people sharing similar on a certain aspect are likely to form collusion and have long-lasting friendly relations based on the particular aspect that they share (Klohnen and Luo 709-722). The research works have articulated the well-known fact that people with similar interests tend to isolate themselves into particular settings. The similarity in opinions, communication skills, values, demographics and interpersonal styles have been shown to increase the level of liking. A larger body of research has consistently suggested that similarity is the primary source of interpersonal attraction and friendship formation as well as the predictor of happy marriages (Larkey and Arthur 1061-1076). In social psychology, the concept of similarity refers to one's closeness in terms of attitudes, personality, values, and interests between people.